CeO2-Co3O4 Catalysts for CO Oxidation
来源期刊：JOURNAL OF RARE EARTHS2006年第2期
论文作者：Li Jinjun Hao Zhengping Xu Xiuyan
Key words：CO oxidation; CeO2; Co3O4; CeO2-Co3O4 catalyst; rare earths;
Abstract: CeO2-Co3O4 catalysts for low-temperature CO oxidation were prepared by a co-precipitation method.In combination with the characterization methods of N2 adsorption/desorption, XRD, temperature-programmed reduction (TPR), and FT-IR, the influence of the cerium content on the catalytic performance of CeO2-Co3O4 was investigated.The results indicate that the prepared CeO2-Co3O4 catalysts exhibit a better activity than that of pure CeO2 or pure Co3O4.The catalyst with the Ce/Co atomic ratio 1:16 exhibits the best activity, which converts 77% of CO at room temperature and completely oxidizes CO at 45 ℃.
Li Jinjun1，Hao Zhengping1，Xu Xiuyan1
(1.Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China)
Abstract:CeO2-Co3O4 catalysts for low-temperature CO oxidation were prepared by a co-precipitation method.In combination with the characterization methods of N2 adsorption/desorption, XRD, temperature-programmed reduction (TPR), and FT-IR, the influence of the cerium content on the catalytic performance of CeO2-Co3O4 was investigated.The results indicate that the prepared CeO2-Co3O4 catalysts exhibit a better activity than that of pure CeO2 or pure Co3O4.The catalyst with the Ce/Co atomic ratio 1:16 exhibits the best activity, which converts 77% of CO at room temperature and completely oxidizes CO at 45 ℃.
Key words:CO oxidation; CeO2; Co3O4; CeO2-Co3O4 catalyst; rare earths;
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